安装nokogiri错误解决

1、直接sudo gem install nokogiri可能会出现如下错误：

ERROR:  Error installing nokogiri:

    ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.8 extconf.rb
checking for libxml/parser.h... no
ibxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----

*** extconf.rb failed ***

2、原因：缺少libxml2和libxslt

3、解决方案：安装如上两个包的开发版，注意，是开发版

sudo apt-get install libxml2-dev

sudo apt-get install libxslt-dev